Dodge Dakota Sport 2001 Service Manual page 268

AN
FAN DRIVE VISCOUS CLUTCH - 3.9L/4.7L/5.9L (Continued)
INSTALLATION
(1) Install fan blade assembly to viscous fan drive.
Tighten bolts (Fig. 27) to 23 N·m (17 ft. lbs.) torque.
(2) Position fan blade/viscous fan drive assembly
and upper shroud into vehicle.
(3) Install fan shroud retaining screws (Fig. 29).
Fig. 29 Upper Fan Shroud Removal/Installation
1 - RADIATOR
2 - ELECTRIC COOLING FAN
3 - UPPER SHROUD AND OVERFLOW BOTTLE
4 - SCREW
5 - LOWER SHROUD
(4) Install fan blade/viscous fan drive assembly to
water pump shaft (Fig. 26).
(5) Connect battery negative cable.
RADIATOR
DESCRIPTION
The radiator (Fig. 30) is a aluminum cross-flow
design with horizontal tubes through the radiator
core and vertical plastic side tanks.
OPERATION
The radiator supplies sufficient heat transfer using
the cooling fins interlaced between the horizontal
tubes in the radaitor core to cool the engine and
automatic transmission oil (if equipped).
DIAGNOSIS AND TESTING—RADIATOR
COOLANT FLOW CHECK
Use the following procedure to determine if coolant
is flowing through cooling system.
(1) Idle engine until operating temperature is
reached. If upper radiator hose is warm to the touch,
Fig. 30 Radiator—Typical
1 - RADIATOR
2 - A/C CONDENSER (IF EQUIPPED)
3 - TRANSMISSION AUXILIARY OIL COOLER
thermostat is opening and coolant is flowing to radi-
ator.
WARNING: HOT, PRESSURIZED COOLANT CAN
CAUSE INJURY BY SCALDING. USING A RAG TO
COVER RADIATOR PRESSURE CAP, OPEN RADIA-
TOR CAP SLOWLY TO FIRST STOP. ALLOW ANY
BUILT-UP PRESSURE TO VENT TO THE RESERVE/
OVERFLOW TANK. AFTER PRESSURE BUILD-UP
HAS BEEN RELEASED, REMOVE CAP FROM
FILLER NECK.
(2) Drain a small amount of coolant from radiator
until ends of radiator tubes are visible through filler
neck. Idle engine at normal operating temperature. If
coolant is flowing past exposed tubes, coolant is cir-
culating.
REMOVAL
WARNING: DO NOT REMOVE CYLINDER BLOCK
DRAIN PLUGS OR LOOSEN RADIATOR DRAIN-
COCK WITH SYSTEM HOT AND UNDER PRESSURE.
SERIOUS BURNS FROM COOLANT CAN OCCUR.
(1) Disconnect battery negative cable.
ENGINE 7 - 47